A Blind Bargain (1922)
Chaney plays two roles: mad scientist Arthur Lamb and Lamb's "experiment", known only as the Ape Man. This hideous creature was the result of Lamb's attempts to transplant animal glands into human beings.
Directed by: Wallace Worsley
Starring: Lon Chaney, Raymond McKee, Jacqueline Logan, Virginia True Boardman, Fontaine La Rue, Aggie Herring
Links: IMDb, Movie posters, Movie stills